Fatal error: Uncaught Error: Interface "Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface" not found in /home/ldt/public_html/canvas/udoit/vendor/symfony/security-core/Security.php:25 Stack trace: #0 {main} thrown in /home/ldt/public_html/canvas/udoit/vendor/symfony/security-core/Security.php on line 25